The SLP LoudMouth LM-2 Mustang Axle-Back Exhaust System allows for maximum flow via straight 2.5-inch tubing, and weighs less than the OEM exhaust. The entirely-304 stainless steel system features dual custom-tailored tips, and comes with pre-welded hangers. It only takes about a half hour to install the system. These exhaust systems are 50-state emission legal and are covered by SLP’s lifetime limited warranty.